Ink-well.



G. J. SENGBUSGH.

INK WgLL. APPLICATION FILED NOV. 29, 1912. RENEWED NOV. 7. 1913.

1,109,019, Patented Sept. 1, 1914.

.-0 ll I/ l, I C'' @mmf-y;

THE KORRIS PETERS CO.. PHOTELLITHQ, WSH'NGTUN. D. C.

e over the ink well disclosed in my Patent-No.`4

UNITED srnrns rarnnrorrion.

GUsTAv J. suns-Busen, or MILWAUKEE, wisconsin.

nioaoie.

lSpecification of Letters Patent."L

Application filed November 29,1912, Serial No. 733,934. `RenewedNovember 7,1913. Serial No. 799,815.

` To 'all whom t may concern Be it known thatl I, GUs'rAV J.SnNoiiUson.,

a resident, of Milwaukee, in the county of-` Milwaukee' and State ofWisconsimhave invented certain new and -useful Improvements inInk-Wells, of which the following is a specification. i.

My invention relates to ink wells, particularly to automatically sealedink wells, and may be consideredy as an' improvement 841,345, issuedJanuary 15, 1907.

In the above patent, the fountain chainl.

ber is of hard rubber 1andfextends entirely to the bottom of the inkbowl, and at its bottom is provided with valve mechanism Afor admittingiii-flow of ink from the bowl. ln order to accommodatey the largefountain chamber in which the plunger plays, the bottom of the ink bowlmust be of 'sufficiently large diameter and the cost of the ink well istherefore considerable. v e

Jamong the important objects ofl my invention are to eliminate-theentire lower part of the fountain structure yto leave only a guide neckfor the plunger stem, and a flange surrounding the lowerend of ythisneck for engaging with an annular seat provided on the bowl, suchconstruction enabling reduction of diameter of the lower part of thebowl and consequent saving in material; to make theintermediate cover.and plunger guide neck structure yof glass and to grind the outer edgeof the flange and the bowl -seat with which it engages so that accuratel and tight fitting Twill` result andy the lower` portion in which 'theplunger piston plays will be sealed from theupper por'- tion of the bowlsurrounding ,the plunger stein guide neck; to providefan improvedarrangement for permitting overflow at thev top of the guide neck andfrom the dip recess; and in general to provide arrangement andconstruction which will eliminate Ias much as possible expensive rubberconstruc-l tion and valve mechanism and which vwill effect saving inmaterial so that the ink well may be constructed for less cost andtherefore be better adaptable for more general usage, as for eXampl'einschools, the above improved construction better fitting the ink well forinsertion inpockets inschool desks. The various features of my inventionare clearly illustrated 5in the accompanying drawingsin whichr Figure 1is a diametral vertical *sectional the cover structurefremoved, Fig. 3isa verrammed sept. 1,1914.

view;L Fig. "2 is .a' plan view thereof with i:

tiCalsectinal view takenyona diainetral v,

Ishowing'the ink well being used, Fig. 4; is aperspectivaview -of thestructure having an 'intermediate cover `and plunger guide neck, andFig.5is a view'of the bottom side guide head in place.

-seat' 111 rfor, the plunger guiding structure designated as a whole 15.This rstructure from whose lower edge extends the flange 17 for formingan intermediate cover or partistructure 15 is preferably of glass andthecurately lit withl the ground seat leon lthe ways 18' are providedthrough the flange, preferablyat the edge' thereof, for allowberstoequalize the levelsrk of lthe ink therein.

. extending upwardly from the plunger y20,

4sealed so thatvit will readily iioat' in the ink in `the lowerl,chamber 13. .to flow upwardlyffupon depression of the excess ofthe"combined area of the slots 18 so that upon depression of the plungerstructure, the greater partof the ink will `flow upwardly through theneck by-passes, the

`lowing gradual restoration f tov level after a quantityoffink' has beenyforced upwardly through the neck andinto the upper chamber 12, suchflow of ink to the chamber 12 taking place over the top of the neck 16.

The main cover structure is preferably of metalva'nd in the form ofacircular disk 22 having 'an annular depending liange 23 near thethreadedupper end of the bowl,-a gas-fl ket=24 being preferably insertedbetween Aplaneflat `right angles'to that of Fig. 1 and vof the `maincover structure with the dipping comprises the cylindrical neck portion16y outer edge of the flange 17 is ground to ac`' bowl. One or morenarrow slots or passage- `ingfiow between the upper and lower lcham-l`thel stem and plunger `,being hollow"'and" plunger structure,longitudinal "grooves 21, `are provided in the neck 16 and the com-f`binedareas of these by-passes 1s greatly 'in slots lpbeingmerely for thepurposeof alits periphery and threaded to engage with form whose sidewall has an` annular outably ofl glass and the inner 'surface thereof 'Ygust vbelow the offset 11 is ground to' form tionl'between the chambers12 rand 13.' The' i Slidable freely in ythe neck 16 is a stem 19 i Toenable ink the coverand the bowl edge to effect per'- fect seating atthis point. At its centerv the cover has a circular passageway k25 intowhich tightly fits the annular flange the dipping guide head 27, thishead being annular and of cone shape cross section and surrounding thedip opening Q8 registering with the neck 16. The' dip head flange 2Greceives the upper end of the neck when the cover structure is appliedto the bowl but the upper end' of the neck, although extend-vv adistance into the flange 26, terminates short of the base vof the diphead, and in the flange 26 passageways 9.9 vare provided through whichmay flow ink forced up through the passageways Q1 by the plunger, andthrough which air is admittedjto compensate for withdrawal of inlr fromthe "When the ink well is iilled and is not `being used, thel plungerstructure will be iloated and held with the upper face of its steintightlyagainst the base of the head 27 to close the dip opening 2S, itbeing noted that the edge about the opening 28 overhangs the passageways2l so that upon sudden depression of the plunger structure andfcoiisequentrapid rush of ink through the passageways, the inl; will notspurt out through the dip opening but will strike against theoverhangin' head and will be deflected radially, most of it beingdeflected radially inwardly overl the top end of the plunger stem to bereceived by the pen, seine of the inl; flowing directly back to chamber12 through the passageways 29in the dip head flange 26. Then theplungerstructure is released it will be returned to its upper position by thepressure ofthe ink. p Some of the ink will flow bach into the lowercham-y bei' 13 down the grcores4 2l .and the remainder of the ink willflow back to the upper chamber l2 through'the passageways 29 and thenthelevel in the two chambers will gradually equalize through the passaways 18. rlhese passagewaysbeing vertical will not clog as thereis'iiocha-ncefor particles to lodge therein or at the openings thereof. lffsuch passageways were horizon' tal tlieywould readily clog and destroythe-v operativeiiess of the well. las the inl; becomes used up and 'isno longer able to float 4the plunger structure, the plunger structurewill rest on the bottom of the ,ink well andvv in order to preventsticking ofthe plunger structure when the ink well is again filled,

its bottom is madel slightly convex and on the floor of the well a peak8S is provided for receiving the apenv of the bottom of the floatstructure. A space is thus left between the plunger structure and* thebowl bottoni for the accumulation of sediment or thick# -ened ink andthe practically one point en` gagement of the plunger lstructure withthe peak will offer no resistance to immediate structure has l .11i thebowl to hold the neck part thereof in 'outer i side of the oiiset fagainst the annular ledge 34.

floating of the plunger structure when the, ink well is refilled, orwhen the plunger is released after being completely depressed by a pen.

The flange 1'( of the intermediate structure maybe more or lessskeletonized to lessen the materia-l and to malte the struc-` turelighter. risshowii in Figl, the flange is hollowed out butguide'projections 3l may .be left for the plunger `head 20 in order tohold the plunger stem centrally in the neck 1G and prevent stickingthereof. The entire `ink well is therefore constructed with a fininimiunnumber of parts each of which has a minimum amount of material, so that`the structure is very light, and by the direct engagement of theintermediate structure with thebowl wall the diameter of the well `rcan,greatly reduced.

The intermediate structure being of glass will not warp as rubber wouldbe rapt to do, and with the ground engaging surfaces, this intermediateaccurate and secure seating vertical alineinent so that the Jloat steinmay lfreely reciprocate therein. All .falve mechajnisni beingeliminated, there are noA small parts which might readily becomedisplaced orr lost or which might stick to other parts `and refuse tooperate. l/Jhen the inl; well is suflicieiitly filled to keep the floatup against kthe dip guide head, the well is entirely sealed and the inkwill be kept in proper fluid condition and free from dust, etc.

rlfhe inlr well is particularly adaptable for use in schools as it canreadily be supported in a pocket `in a desk top. ils shown in Figs. land3, the inl: well is supported by a top 32 in a pocket 33 providedthereimthe pai't ll. seating Changes and modifications may be madewhichwould incorporate the features of the invention and l do not desireto belimited fto` the precise construction shown and described and andarrangement Ul claim the following:

l. ln an ink well structure, the combination of a bowl, a cover for saidbowl having a depending annularflange, a guide memiber adapted to seatat its lower end against the inner wall of said bowl and having itsnating short ofsaiddabutment and said flange having overflowpassageways. i

2; In'an ink well structure, the combinachamber, said extension having avertical guide passageway, a float member in said lower chamber having astem engaging in saidpassageway, an abutmentk on said cover structurefor the upper end of said stem and a dip 'opening through said abutmentto said stem, said extension having bypasses` through which inlrmayflowy upon depression of the stem and displacement of inlr in the lowerchamber, over-flow passageways in said cover flange whereby ink may flowfrom the top of the stem to the upper chamber, and level equalizingpassageways through said intermediate wall.

3. In an ink well structure, the combination of a bowl, a coverstructure for said bowl having a depending annular flange, anintermediate partition seating against the inner face of said bowl andhaving an upward extension received by said annular flange, saidintermediate wall and extension dividing said bowl into an upper and alower chamber, said extension having a vertical guide passageway, afloat member in said lower chamber having a stem engaging in saidpassageway, an abutment on said cover structure `for the upper end ofsaid stem and a dip opening through said abutment to said stem, saidextension having bypasses through which ink may flow upon depression ofthe stem and displacement of ink 1n the lower chamber, over-flowpassageways in said cover flange whereby ink` may flow from the top ofthe stem to the upper chamber, and level equalizing pas'- sagewaysthrough said intermediate wall,

said bowl and intermediate wall and exten-` sion being of glass and theseat and engaging surfaces being ground.

4. In an ink well structure, the combination of a bowl, a metalliccover'vfor said bowl having a central opening, a dipping guide headhaving a flange extending through said opening, an intermediatestructure seating against the sidesof said bowl intermediate its endsand having annupward extension received by the lower end of said flange,a float member in said bowl having a neck extending through saidextension, said extension having by-passes through which ink may flowupon depresmner face of said bowl and having an upsion of the floatmember, said flange having overflow passageways through' which ink mayflow from the top of said float and the upper end of said extension.y

5. In an yink well structure, the combination of a bowl, a cover forsaid bowl having a dip opening, a flange depending from said frame insaid bowl having its upper end extending into said flange, said guideframe having a lvertical passageway therethrough, a float member adaptedto play in said passageway and to be floated by ink in the well "to holdits upper surface against the under side of the cover to seal the dipopening,

said guide frame having passageway therethrough through which ink mayflow upon depression of said float member, and overflow passageway forkthe flow of ink back to the well from the space in vthe guide frameabove the depressed float member.

6. In an inlrwell structure, the combination of a bowl, a cover for saidbowl having a dip opening, a flange depending from said cover andsurroundingsaid opening, a guide frame in said bowl having its upper endextending into said flange, said guide frame having avertical passagewaytherethrough, a float member adapted to play in said passageway and tobe floated by ink in the well to hold its upper surface against theunder side of the cover to seal the dip opening, said guide frame havingpassageway therethrough through which ink may flow upon depression ofsaid floatmember, the upper end of said guide frame terminating short ofthe cover, andsaid fiange having overflow passageways therethrough.

7. In an ink well structure, the combinal tion of a bowl, a cover forsaid bowl having lcover and surrounding said opening, avguide n a dipopening, aI guide frame in said bowl lcooperating with the bowl to forma float compartment, a float member 1n said com-4 partment extendingupwardly through the frame to abut against the cover to close the y dipopening, said frame having passageway therethrough for the ow of inkupwardly into the space above the depressed float member, and verticalequalizing passageways between said float compartment -and the space atthe outside thereof.

In witness whereof, I have hereunto subscribed my name, this 26th day ofNovember, A. D., 19,12.

GUSTAV J. SENGBUSCH. lVitnesses:

FRANK M. BRUCE, Jol-IN CLAUDE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Waihington, D. C.

